Groundbreaking took place on June 1, 2004 and the building's facade was completed in January 2008. After the construction having been delayed as result of a fire which in February 2009 engulfed the adjacent Television Cultural Center, the Headquarters has been finally completed in May 2012. Rem Koolhaas and Ole Scheeren of OMA were the architects in charge for the building, while Arup provided the complex engineering design. The main building, a 44-storey skyscraper, is not a traditional tower, but a loop of six horizontal and vertical sections covering 473,000 m2 (5,090,000 sq ft) of floor space, creating an irregular grid on the building's facade with an open center.